نتایج جستجو برای: harvest
تعداد نتایج: 23260 فیلتر نتایج به سال:
An integrated model combining a wildlife population simulation model and timber harvest and growth models was developed to explore the tradeoffs between the likelihood of persistence of a hypothetical wildlife species and timber harvest volumes on a landscape in the Central Oregon Cascades. Simulated annealing, a heuristic optimization technique, was used to solve for harvest schedules that max...
Lake Tanganyika has a very rich pelagic fishery, which consists mainly of endemic clupeid species (Stolothrissa tanganicae and Limnothrissa miodon) and their predators, endemic centropomids (Lates spp.). Stolothrissa tanganicae is the most important species in the fishery. Coenen (1995) estimated a total overall fish catch for Lake Tanganyika from 1992 to be 167,000 metric tones, of which 80,00...
The objective of this review is to compare the cost of coppice and longer rotation poplar harvesting technology. Harvesting technology for short rotation poplar has evolved over the years to address both coppice harvest and single-stem harvest systems. Two potential approaches for coppice harvesting are modified forage harvesters and modified mulcher-balers. Both of these systems effectively ha...
OBJECTIVE To describe HARVEST, a novel point-of-care patient summarization and visualization tool, and to conduct a formative evaluation study to assess its effectiveness and gather feedback for iterative improvements. MATERIALS AND METHODS HARVEST is a problem-based, interactive, temporal visualization of longitudinal patient records. Using scalable, distributed natural language processing a...
In this study, the effects of the storage duration of coffee cherries after harvest before putting out for sun drying on the kinetics of drying, fungi development and the variation of physicochemical content were evaluated. The results showed that the longer coffee cherries were stored after harvest before putting out for sun drying, the quicker they dried. Indeed, the drying durations were 19,...
the yield and quality features of raisin are affected by various factors especially har-vest date and dipping solutions. combinations of different harvest date (four harvest dates) and post harvest alkaline emulsion (three alkaline solutions) were tested in vitis vi-nifera l. cv ‘paycamy’ green raisin production in kashmar, khorasan province of iran. such raisin quantitative and qualitative cha...
Population models of white-tailed deer (Odocoileus virginianus) are used by many states to predict population levels and aid in making management decisions. Delaware did not have a deer population model, so we developed one and used it to investigate the implications of changes to the harvest. We modeled 7 changes to the harvest regime and compared these changes to the base line of no changes t...
We compared the initial effects of four forest regeneration treatments (single-tree selection, group selection, shelterwood, and clearcut), and unharvested controls (mature, second-growth forest) on relative abundance of small mammals and smallmammal habitat throughout the Ouachita Mountains of western Arkansas and eastern Oklahoma. We compared small-mammal capture rates in 20 forest stands (4 ...
What Won’t Get Harvested, Where and When: The Effects Of Increased Paper Recycling On Timber Harvest Peter J. Ince, Ph.D. USDA Forest Service Pulp and paper production and paper recycling have increased in recent decades to unprecedented levels throughout the world. This paper presents a review and comparison of regional trends in timber harvest, pulp and paper production, waste paper recovery ...
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